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#pragma ident "%Z%%M% %I% %E% SMI"
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*-
*
* The contents of this file are subject to the Netscape Public License
* Version 1.0 (the "NPL"); you may not use this file except in
* compliance with the NPL. You may obtain a copy of the NPL at
* http://www.mozilla.org/NPL/
*
* Software distributed under the NPL is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
* for the specific language governing rights and limitations under the
* NPL.
*
* The Initial Developer of this code under the NPL is Netscape
* Communications Corporation. Portions created by Netscape are
* Copyright (C) 1998 Netscape Communications Corporation. All Rights
* Reserved.
*/
/*
* psearch.c - Persistent search and "Entry Change Notification" support.
*/
#include "ldap-int.h"
int
LDAP_CALL
ldap_create_persistentsearch_control( LDAP *ld, int changetypes,
int changesonly, int return_echg_ctls, char ctl_iscritical,
LDAPControl **ctrlp )
{
BerElement *ber;
int rc;
if ( !NSLDAPI_VALID_LDAP_POINTER( ld )) {
return( LDAP_PARAM_ERROR );
}
if ( ctrlp == NULL || ( changetypes & ~LDAP_CHANGETYPE_ANY ) != 0 ) {
rc = LDAP_PARAM_ERROR;
goto report_error_and_return;
}
/*
* create a Persistent Search control. The control value looks like this:
*
* PersistentSearch ::= SEQUENCE {
* changeTypes INTEGER,
* -- the changeTypes field is the logical OR of
* -- one or more of these values: add (1), delete (2),
* -- modify (4), modDN (8). It specifies which types of
* -- changes will cause an entry to be returned.
* changesOnly BOOLEAN, -- skip initial search?
* returnECs BOOLEAN, -- return "Entry Change" controls?
* }
*/
if (( nsldapi_alloc_ber_with_options( ld, &ber )) != LDAP_SUCCESS ) {
rc = LDAP_NO_MEMORY;
goto report_error_and_return;
}
if ( ber_printf( ber, "{ibb}", changetypes, changesonly,
return_echg_ctls ) == -1 ) {
ber_free( ber, 1 );
rc = LDAP_ENCODING_ERROR;
goto report_error_and_return;
}
rc = nsldapi_build_control( LDAP_CONTROL_PERSISTENTSEARCH, ber, 1,
ctl_iscritical, ctrlp );
report_error_and_return:
LDAP_SET_LDERRNO( ld, rc, NULL, NULL );
return( rc );
}
int
LDAP_CALL
ldap_parse_entrychange_control( LDAP *ld, LDAPControl **ctrls, int *chgtypep,
char **prevdnp, int *chgnumpresentp, ber_int_t *chgnump )
{
BerElement *ber;
int rc, i, changetype;
ber_len_t len;
ber_int_t along;
char *previousdn;
if ( !NSLDAPI_VALID_LDAP_POINTER( ld )) {
return( LDAP_PARAM_ERROR );
}
/*
* find the entry change notification in the list of controls
*/
for ( i = 0; ctrls != NULL && ctrls[i] != NULL; ++i ) {
if ( strcmp( ctrls[i]->ldctl_oid, LDAP_CONTROL_ENTRYCHANGE ) == 0 ) {
break;
}
}
if ( ctrls == NULL || ctrls[i] == NULL ) {
rc = LDAP_CONTROL_NOT_FOUND;
goto report_error_and_return;
}
/*
* allocate a BER element from the control value and parse it. The control
* value should look like this:
*
* EntryChangeNotification ::= SEQUENCE {
* changeType ENUMERATED {
* add (1), -- these values match the
* delete (2), -- values used for changeTypes
* modify (4), -- in the PersistentSearch control.
* modDN (8),
* },
* previousDN LDAPDN OPTIONAL, -- modDN ops. only
* changeNumber INTEGER OPTIONAL, -- if supported
* }
*/
if (( ber = ber_init( &(ctrls[i]->ldctl_value))) == NULL ) {
rc = LDAP_NO_MEMORY;
goto report_error_and_return;
}
if ( ber_scanf( ber, "{e", &along ) == LBER_ERROR ) {
ber_free( ber, 1 );
rc = LDAP_DECODING_ERROR;
goto report_error_and_return;
}
changetype = (int)along; /* XXX lossy cast */
if ( changetype == LDAP_CHANGETYPE_MODDN ) {
if ( ber_scanf( ber, "a", &previousdn ) == LBER_ERROR ) {
ber_free( ber, 1 );
rc = LDAP_DECODING_ERROR;
goto report_error_and_return;
}
} else {
previousdn = NULL;
}
if ( chgtypep != NULL ) {
*chgtypep = changetype;
}
if ( prevdnp != NULL ) {
*prevdnp = previousdn;
} else if ( previousdn != NULL ) {
NSLDAPI_FREE( previousdn );
}
if ( chgnump != NULL ) { /* check for optional changenumber */
if ( ber_peek_tag( ber, &len ) == LBER_INTEGER
&& ber_get_int( ber, chgnump ) != LBER_ERROR ) {
if ( chgnumpresentp != NULL ) {
*chgnumpresentp = 1;
}
} else {
if ( chgnumpresentp != NULL ) {
*chgnumpresentp = 0;
}
}
}
ber_free( ber, 1 );
rc = LDAP_SUCCESS;
report_error_and_return:
LDAP_SET_LDERRNO( ld, rc, NULL, NULL );
return( rc );
}
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